1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <string.h> 18 19 #define LOG_TAG "DevicesFactoryHalHidl" 20 //#define LOG_NDEBUG 0 21 22 #include <android/hardware/audio/2.0/IDevice.h> 23 #include <media/audiohal/hidl/HalDeathHandler.h> 24 #include <utils/Log.h> 25 26 #include "ConversionHelperHidl.h" 27 #include "DeviceHalHidl.h" 28 #include "DevicesFactoryHalHidl.h" 29 30 using ::android::hardware::audio::V2_0::IDevice; 31 using ::android::hardware::audio::V2_0::Result; 32 using ::android::hardware::Return; 33 34 namespace android { 35 36 DevicesFactoryHalHidl::DevicesFactoryHalHidl() { 37 mDevicesFactory = IDevicesFactory::getService(); 38 if (mDevicesFactory != 0) { 39 // It is assumed that DevicesFactory is owned by AudioFlinger 40 // and thus have the same lifespan. 41 mDevicesFactory->linkToDeath(HalDeathHandler::getInstance(), 0 /*cookie*/); 42 } else { 43 ALOGE("Failed to obtain IDevicesFactory service, terminating process."); 44 exit(1); 45 } 46 } 47 48 DevicesFactoryHalHidl::~DevicesFactoryHalHidl() { 49 } 50 51 // static 52 status_t DevicesFactoryHalHidl::nameFromHal(const char *name, IDevicesFactory::Device *device) { 53 if (strcmp(name, AUDIO_HARDWARE_MODULE_ID_PRIMARY) == 0) { 54 *device = IDevicesFactory::Device::PRIMARY; 55 return OK; 56 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) { 57 *device = IDevicesFactory::Device::A2DP; 58 return OK; 59 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) { 60 *device = IDevicesFactory::Device::USB; 61 return OK; 62 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) { 63 *device = IDevicesFactory::Device::R_SUBMIX; 64 return OK; 65 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_STUB) == 0) { 66 *device = IDevicesFactory::Device::STUB; 67 return OK; 68 } 69 ALOGE("Invalid device name %s", name); 70 return BAD_VALUE; 71 } 72 73 status_t DevicesFactoryHalHidl::openDevice(const char *name, sp<DeviceHalInterface> *device) { 74 if (mDevicesFactory == 0) return NO_INIT; 75 IDevicesFactory::Device hidlDevice; 76 status_t status = nameFromHal(name, &hidlDevice); 77 if (status != OK) return status; 78 Result retval = Result::NOT_INITIALIZED; 79 Return<void> ret = mDevicesFactory->openDevice( 80 hidlDevice, 81 [&](Result r, const sp<IDevice>& result) { 82 retval = r; 83 if (retval == Result::OK) { 84 *device = new DeviceHalHidl(result); 85 } 86 }); 87 if (ret.isOk()) { 88 if (retval == Result::OK) return OK; 89 else if (retval == Result::INVALID_ARGUMENTS) return BAD_VALUE; 90 else return NO_INIT; 91 } 92 return FAILED_TRANSACTION; 93 } 94 95 } // namespace android 96
